Various3 subjects (20th century): - Second half of the 20th century. Prosthesis. Etching. 650 x 500. Proof on vellum signed, annotated "EA" and titled "Prothesis". - Lars Bô (1924-1999). The Birders. Etching and aquatint. 270 x 270. Proof on vellum, signed and numbered "10/50". Large margins. - Martial Thomas (20th century). Composition. Serigraphy. 481 x 628. Proof signed and annotated "Artist's proof".